ABBA was a Swedish pop group formed in Stockholm in 1972. The band's name is an acronym of the first letters of the members' names: Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad. Benny and Björn were already a songwriting duo, and Agnetha and Anni-Frid were both established singers in Sweden when they formed the group. ABBA became one of the most commercially successful acts in the history of popular music, topping charts worldwide with their catchy tunes and distinctive sound.

Their breakthrough came with their victory in the Eurovision Song Contest in 1974 with the song "Waterloo," which catapulted them to international fame. From there, ABBA went on to dominate the charts with numerous hits characterized by catchy melodies, rich harmonies, and a unique blend of pop and disco influences. Their music and distinct style have left an indelible mark on pop culture, making ABBA one of the most successful and enduring musical acts in history.